Vital Graphics Series. WebThe Cancers Attributable to UV Radiations. The UV index climatology shows how much UV exposure a person could get on average during each month. However, higher UV Index values may occur due to the variability of the influence parameters (e.g. Please click here to see any active alerts. Although this may be in error (especially when cloud conditions are unexpectedly heavy or light), it is usually within 1 UV index unit as that which would be measured. However, skin damage from sunburn is related to wavelength, the shorter wavelengths being much more damaging. Ground reflection: grass, soil and water reflect less than 10% of UV radiation; fresh snow reflects as much as 80%; dry beach sand about 15% and sea foam about 25%. The UV index is designed as an open-ended linear scale, directly proportional to the intensity of UV radiation, and adjusting for wavelength based on what causes human skin to sunburn. The top 20 countries for skin cancer diagnoses (and their average summer UV index) are (7): #1 Australia (average UV index of greater than 12) #2 New Zealand (average UV index of greater than 11) #3 Norway (average UV index of 5 or less) #4 Denmark (average UV index of 6 or less) UV radiation To installthe widget on your page:https://www.epa.gov/developers/data-data-products-envirofacts-uv-index-widget. WebThis indicator provides state and county level data on monthly and annual average doses of UV irradiance measured daily and at noon. Monthly mean UVI at the local noon over Europe for January until June over the time period 19832015 based on satellite data. Click the buttons for Day 2, Day 3, or Day 4 to see the UV Index forecast for following days. UV Radiation WebUV Index worldwide. The UVI is an important vehicle to alert people about the need to use sun protection. The UV Index does not drop below 11 at any point in the year, which means that there is a constant and extreme risk of harm. Historic policies such as the Montreal Protocol and the Copenhagen Amendment have already had a positive impact on the number of new skin cancer diagnoses, estimated to have prevented thousands of future cases (14). Countries close to the equator can experience very high UV levels in the middle of the day throughout the year. In the evolution of humankind, our early ancestors developed additional pigmentation to their skin, presumably to help withstand the high levels of UV radiation they were exposed to. An official website of the United States government. Thus UV radiation levels vary with time of day and time of year. WebUV levels are higher in the north of the country. WebThe Global Solar UV Index (UVI) The UVI is a simple measure of the UV radiation level at the Earth's surface. The map is created daily from National Weather Service forecast data. Initially, the methods of calculating and reporting a UV index varied significantly from country to country. Saving Lives, Protecting People, American Society for Dermatologic Surgery Association, Sunlight/UV Vulnerability and Preparedness, Centers for Disease Control and Prevention, U.S. Department of Health & Human Services. Ultraviolet index The UVI is usually presented as a forecast of the maximum amount of UV radiation expected to reach the Earth's surface at solar noon. system. Those with darker skin (Type IV+) are more likely to withstand greater sun exposure, while extra precautions are needed for children, seniors, particularly fair-skinned adults, and those who have greater sun sensitivity for medical reasons[26] or from UV exposure in previous days. Just fill out the form below. Taking these factors into account, the UV Index predicts the level of solar UV radiation and indicates the risk of overexposure on a scale from 0 (low) to 11 or more (extremely high). Exposure to solar ultraviolet (UV) radiation Indices of 9 and 10 are common in the Mediterranean area.